https://www.youtube.com/shorts/ZtCZuV49d2E
Tools and strategies designed to ensure that sensitive information is not lost, misused, or accessed by unauthorized users.
#cybersecurity#security#data-protection
To coordinate timing between concurrent threads; to make multiple parallel processes move in harmony
#multithreading#programming#concurrency#chinese-translation
Iron (Fe) has an atomic number of 26, meaning it has 26 protons in its nucleus
#chemistry#periodic-table#elements
Automobiles are powered by gasoline (petrol), a liquid fuel that is burned in an internal combustion engine to produce energy for motion
#transportation#automobiles#fuel
An open-source NoSQL database designed to distribute large amounts of data across many servers with no single point of failure; a distributed, highly available database system
#nosql#database#distributed-systems#job-requirements
同步 (tóngbù); coordinating thread operations so they occur in proper sequence; threads moving together in coordinated timing
#concurrent-programming#threading#technical#computer-science
W26 is Y Combinator's batch label for the Winter 2026 cohort. YC runs several batches a year named by season and year (W for Winter, S for Summer). A "Y Combinator W26 startup" indicates the company was backed through the program in that winter session, serving as a quick reference for the recency and formality of backing.
#startups#venture-capital#Y-Combinator#business-terminology
A search feature that updates results as the user types, using switchMap to cancel previous requests and only keep the latest response, preventing outdated results from overwriting newer ones
#rxjs#switchMap#asynchronous#search+1
An RxJS operator that waits for a pause in a stream before emitting a value; it only emits the latest value once a specified time has passed with no new values arriving
#rxjs#operators#stream-transformation#reactive-programming+1
A web security vulnerability where an attacker injects malicious JavaScript code that executes in another user's browser, typically through unescaped input fields like comments or URL parameters
#web-security#javascript#vulnerability#angular+1
A state management library for Angular built on RxJS and modeled on the Redux pattern. It centralizes application state in a single store, manages state changes through dispatched actions handled by reducers, and allows components to subscribe to state slices via selectors.
#angular#state-management#rxjs#redux-pattern
AHEAD's internal integration facility where hardware and infrastructure (servers, networking, storage) are received, configured, tested, and assembled before delivery to clients
#business#operations#infrastructure#hardware+1
A PostgreSQL extension that enables trigram matching by breaking text into overlapping three-character chunks and comparing similarity between strings, allowing fuzzy/approximate text matching in queries
#postgresql#extensions#fuzzy-search#text-matching+2
The process of converting raw status text returned by logistics providers into standardized status values defined by a system (e.g., transit, delivered, exception). Different logistics providers use different terminology, so mapping rules must correctly normalize variations like 'Delivered', '已妥投', 'Left at front door' to a single standard status. Incorrect mapping rules cause discrepancies such as 'system shows delivered but customer didn't receive package'.
#logistics#e-commerce#system-design#bug-patterns+1
A data parameter in an API request; when an error indicates 'additional fields needed', it means certain logistics providers require extra information beyond just a tracking number to retrieve package data
#api#logistics#parameters#error-handling
A document and tracking number that identifies an air cargo shipment; used to track air freight deliveries across airlines
#logistics#shipping#air-cargo#tracking
To financially compensate or reimburse another party for losses, damages, or legal costs incurred
#legal#finance#business
A Linux command that displays system and error logs for a specific systemd service or unit.
#linux#systemd#logging#cli
df -h is a Linux/Unix command that displays the available and used disk space of all mounted filesystems in a human‑readable format.
#linux#unix#command-line#disk-usage
An inode (index node) is a data structure on a Unix/Linux filesystem that stores all metadata about a file or directory except its actual contents and filename.
#filesystem#unix#linux#metadata+1
A safety mechanism in the Linux kernel that terminates one or more processes when the system runs critically low on available memory and swap space.
#linux#operating-systems#memory-management
TLS (Transport Layer Security) is a cryptographic protocol that provides secure communication over a computer network.
#security#networking#protocols
A command on Unix-like operating systems that prints or controls the kernel ring buffer, standing for 'display message' or 'driver message'.
#linux#cli#kernel#commands
Telemetry refers to the automated collection, measurement, and transmission of operational data from remote systems to a centralized platform for monitoring and analysis.
#technology#monitoring#data-collection
Telemetry is the automated collection, measurement, and transmission of operational data from remote systems to a centralized platform for monitoring and analysis.
#technology#monitoring#data-collection
An HTTP status code indicating that the server understood the request but a precondition specified in the request was false, so the server refuses to fulfill it.
#http#status-codes#web#errors
A database or state account that experiences high contention because many transactions attempt to write to or update it at the same time.
#databases#concurrency#distributed-systems#performance
A set of four key properties (Atomicity, Consistency, Isolation, Durability) that guarantee database transactions are processed reliably.
#database#transactions#sql
A server architecture that does not store any state or session information between requests; each request is processed independently using external storage for persistence.
#architecture#backend#system-design#servers
A behavioral model consisting of a fixed set of states and defined transitions between them, rejecting any invalid state changes.
#computer-science#architecture#state-management
HMAC (Hash-based Message Authentication Code) is a cryptographic construct that produces a fingerprint of a message using a secret key; only someone possessing the key can generate the correct fingerprint.
#security#cryptography#authentication
A logic-less templating syntax that uses double curly braces {{ }} as placeholders for dynamic data replacement
#templating#syntax#web-development
A comprehension is a concise syntax for constructing a list, set, or dictionary by iterating over an iterable within brackets.
#python#list-comprehension#coding
A bitemporal store is a database that tracks two separate timelines for every fact: valid time (when the fact was true in the real world) and transaction time (when the database learned the fact).
#databases#bitemporal#data-modeling
A Python type-stub file that contains type hints and function signatures without implementation details, used by static type checkers.
#python#typing#stubs
Moving messages that were placed in a dead‑letter queue back to the original (or another) queue for reprocessing.
#messaging#queues#dead-letter#reprocessing+1
A programming interface for web documents that represents the structure of a document as a tree of objects
#technology#web-development#programming
https://www.youtube.com/shorts/_4uy2sROdYQ
A program at the Massachusetts Institute of Technology that collaborates with communities in lower-income or resource-limited regions to design and implement practical technologies.
#mit#technology#social-impact#international-development
a fake object for testing, from the unittest.mock module in Python's standard library
#testing#unittest#mocking
Here; in or at this place
#location#daily-life
A strategy with two coordinated parts that run together toward the same goal
#strategy#decision-making
a Unix or Linux process signal that force stops a program immediately
#unix#linux#process-management#signals
Google Web Designer
#google#web-design#acronyms
A collaborative development program between PMG and platform partners
#business#technology#collaboration
na
config/settings/base.py is a shared foundation for Django project settings, loading environment values and defining common defaults and required config
#django#settings#configuration
A helper function from django-environ that reads an environment variable and converts it to an integer
#django#environment-variables#python
5 step combo: https://www.instagram.com/p/C-L1HI4Os9c/
Application Performance Monitoring; tracking and measuring application performance
#performance-monitoring#devops#observability
A context manager that wraps a block of DB operations in a single all-or-nothing database transaction
#python#django#transactions#concurrency
a method that tells the ORM to fetch specific column values instead of building full model objects
#orm#querying#optimization
A keyboard shortcut to open the Applications folder in Finder
#macos#productivity#shortcuts
A database column that can hold a NULL value, indicating the absence of a value
#databases#django#fields
command; instruction
#daily-life#commands
A type of diagram used to represent entity-relationship models in database design
#academic#computing
A filter in CM 360 used to select specific campaigns and placements
#cm360#campaign-management#advertising
Quarterly Business Review, a recurring meeting to review past quarter results and set goals for the next quarter
#business#meetings#management
Filtering CTV Native in Campaign Manager 360 for specific advertisers and sites
#google-cm360#advertising#ctv-native#omnichannel+1
A network of edge servers that cache static files near users to reduce load times and improve performance
#web-development#performance-optimization#aws#cloud-computing
Accessory
#electronics#vehicles
an unplanned fortunate discovery
#discoveries#fortune
room
#rooms#furniture
kitchen
#household#rooms
entryway
#architecture#buildings
test
#exams#daily-life
butler
#household#servants#19th-century
European Economic Area, a region of free movement of goods and people
#economics#geography
A request from a data subject to receive a copy of the personal data being processed and an explanation of the purposes for which personal data is being used
#data-protection#compliance#privacy
General Data Protection Regulation, an EU law governing personal data handling and privacy rights
#law#privacy#eu-regulations
Pork; meat from a pig
#food#meat
Some animals can be allergic to humans, typically due to human dander or other environmental factors
#biology#animal-health#allergies
An error that occurs when a browser doesn't trust the SSL certificate being used by a website, often due to a self-signed certificate in local development environments
#ssl#certificates#debugging#local-development
void specifies that a function does not return a value; it describes the return type, not the function's behavior
#typescript#functions#types
Lasting for a very short time
#literary#temporary